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Rollback from A10 beta19 to A9 Pie. How? Feb 23, 2021

Plenkske , Feb 24, 2021 :

In the beta thread, as linked by @gdsingh94 , you can find the instructions to roll back:

Want to go back to Android Pie? Download the Rollback package from the links below:

• OnePlus 7
• OnePlus 7 Pro

OBT to MP rollback guide - via Local OTA update
Note: This upgrade method will erase all the contents of the phone, please be sure to backup first.
1. Download the latest ROM upgrade zip package from the specified server.
2. Copy the Rollback package to the phone storage.
3. Go to Settings -> System -> System Updates -> Click top right icon -> Local upgrade -> Click on the corresponding installation package -> upgrade -> System upgrade completed to 100%.
4. After the upgrade is complete, click Restart.
5. Update successful.

Make sure you download the right package first.